Part A If $C_2{F}_4$ is a gas that dissolves in water at $298K$ to the extent of $1\mathrm{.}02{10}^{-3}M$ with a partial pressure of $0\mathrm{.}64$atm, what is its Henry's$-$law constant at $298K?$ Express your answer to two significant figures and include the appropriate units. $$ Request Answer